Improvement in grindstones or tool-sharpeners



i UNITED 7 STATES PATENT OEEICE4 UEIAH EAEIsANDAEEAHAM MILLER, on EED nook,v IowA.

Specification forming part of Letters Patent No. 107,768, dated September 27x, 1870.

To all whom tlm/wy concern:

.Beit known that we, AUE'IAII.` FAEIs and ABRAHAM MILLER, of RedRock, in the county of Marion, and inthe State of Iowa, have invented certain new and useful Improvements I in Grindstones or Tool-Sharpeners; and we do hereby declare that the following is afull, clear,

and exact description thereof, reference be-` ing had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

i The nature of our invention consists in the construction andarrangement of 'a machine for grinding and sharpening tools, las will be hereinafter fully set forth.

g In order toenable `others skilled lin the `art g to which our` inventionappertainsto make and use the same, we will' now proceed todescribe its construction'and operation, referwhich the pitman is connected` with the carriage.

A" represents the frame of our machine, in

i which, Vat a suitable point, are two guides, B

. B, uponwhich` the carriage C moves.

The guides B Bare lined or shod with metal on their upper`edges,wherethe carriage rests,

. and they are further made adjustable up and down, for the purpose of raising or lowering the carriage at will, by means of set-screws a a, which pass through vertical slots in the guides, as shown in Fig. 2, and secure the guides to the frame.

In the upper side-of the carriage C is a` re- `ces`s,in which the stone D is laid, said stone being raised andlowered at will by means of set-screws b b,passing upward from theunder side of the carriageand bearing against the `under side 'of the stone.

Around the stone D invtheiupper surface of the carriage C is 'a groove, e, in whichthe oil` or `waterirom the stone collects and passes downwardthrough the holes t' t in the carriage. Above the carriage on the frameAis secured an adjustable rest, E, for the Ipurpose of plac `ing the tool nponwhen sharpening.

The carriage is moved by means of a wheel, G, strap H, and treadle I, and upon the shaft J of the wheel G is a crank connected by pitman K with the carriage.

The connection between the carriage and pitrnan is formed by a hook, cl, which is secured to the end of the carriage, andthe pitman placed on the same and prevented from slipping off by means of a button, f, as shown in Fig. 3. A

In order to change the stone,it is only necessary to turn the button j" and remove the pitman, when the carriage can be readily taken out and the change effected.

At a suitable point above the stone is placed V a vessel, L, with tube h to supply oil or water to the stone as needed.

The whole'machine is to be placed upon the `bench or at any convenient place for the op- 2. In combination with the carriage C, the

stone D, resting ina recess vupon said carriage, and adjusted by means of the set-screws b b, substantially as and for the purposes herein set forth. I

3. The arrangement of the hook or stirrup d and button f, for connecting the carriage C and pitman K, substantially as shown and del scribed.

t. rIhe combination of the adjustable guides B B, carriage C, adjustable stone D, adjustable toolrest E,` and a mechanism for giving theI carriage a reciprocating motion, substantially as and for the purposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 27th day of June, 1870.

( URIAH FABIS.

`ABRAHAM MILLER.

Vit-nesses:

BENJAMIN F. POINTER, JosIUA BoUsrL 

